PHOTOSHOP - Stamp visible not working with one smart object (cmd-alt-shift-e) 20151209.r327

Bug:
With only 1 smart object in the layer stack, the command:
cmd-alt-shift-e does not work, making it impossible to create a second flat pixel based layer on top of the smart object. The work around is to create a empty layer on top of the smart layer in order for the command to work, which is quite a PITA !